I would recommend trying the three different races against the AI for a bit to see what you like. Or watch pro matches and pick a favorite player and do that race. Then just practice and lose graciously, learning from your mistakes the whole time. No gg, no skill.

Yeah I guess thats prolly the best idea cuz I played terran before but that was like a year ago and things have changed so much since then so I might just completely try to relearn the game using a different race

I would try to play against the AI to get a feeling for the races again. Your playstyle will fit to one or another race and this will be the race you should have he most fun playing. You can watch pro's to get ideas of how you can play those races and I'm pretts sure you will find your race ^